Soil Insect
Mostrando 13-24 de 61 artigos, teses e dissertações.
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13. Seed weight of Xylopia aromatica (Annonaceae): quality evaluation from X-ray and seedling emergence
Xylopia aromatica (Lam.) Mart. (Annonaceae) is a native species of the Brazilian Savannah (“Cerrado”) region, recommended for the recovery of degraded areas and also for medicinal use. Seeds of some species of the Annonaceae require a long period to germinate and many studies have focused on determining methods which can rapidly analyze seed quality. The
Scientia Agricola. Publicado em: 2011-12
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14. Induction of insect plant resistance to the spittlebug Mahanarva fimbriolata Stål (Hemiptera: Cercopidae) in sugarcane by silicon application
Changes in the agroecosystem with the increase of green cane harvesting in Brazil affected the insect populations associated to this crop, and secondary pests like the spittlebug Mahanarva fimbriolata Stål, became much more important. Many studies have demonstrated the active role played by silicon in plant defense against herbivory. The objective of this s
Neotropical Entomology. Publicado em: 2011-06
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15. Effect of soil management on the white grub population and damage in soybean.
To evaluate the effect of soil management systems on population of white grubs, (Phyllophaga cuyabana Moser), and on its damage in soybean, experiments were set up under no-tillage and conventional tillage (one disk plow, and a leveling disk harrow) areas. Primary tillage equipment, used in other soil management systems, such as moldboard plow, disk plow, ch
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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16. Program, abstracts and related documents.
The context: Soil biodiversity and sustainable agriculture; Abstracts - Theme 1: Monitoring and assessment: Bioindicators of soil health: assessment and monitoring for sustainable agriculture; Practical tools to measure soil health and their use by farmers; Biological soil quality from biomass to biodiversity - importance and resilience to management stress
Londrina: Embrapa Soybean: FAO. Publicado em: 2011
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17. Aspectos bioecológicos do coró-das-hortaliças Aegopsis bolboceridus (Thomson) (Coleoptera: Melolonthidae) no cerrado do Brasil Central.
ABSTRACT: Insects commonly well-known as white grubs are the larval phase of beetles that belong to the Melolonthidae (Coleoptera). This family contains an expressive number of insect species that have different bioecological functions in the agroecosystems in the adult and immature phases. In four of five trophic levels, they are primary and secondary consu
Planaltina. Publicado em: 2011
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18. Controle quimico da larva de Diabrotica spp. na cultura do milho em sistema de plantio direto.
Avaliou-se a eficiência de diversos inseticidas, aplicados através de diferentes métodos, visando o controle de larvas de Diabrotica spp. na cultura do milho em sistema de plantio direto. Os ensaios foram conduzidos em oito locais na regíão de Ponta Grossa, PR, durante dois anos consecutivos. Os tratamentos constaram de diferentes inseticidas e métodos
Revista Brasileira de Milho e Sorgo. Publicado em: 2011
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19. Influence of soil temperature and moisture on the infectivity of entomopathogenic nematodes (Rhabditida: Heterorhabditidae, Steinernematidae) against larvae of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae)
The Mediterranean fruit fly, Ceratitis capitata (Wiedemann), is considered one of the main pests that affect fruit production in the world. This insect spends part of its life cycle in the soil, making it a target for entomopathogenic nematodes. This work aimed at evaluating the influence of soil temperature and moisture on the infectivity of Heterorhabditis
Neotropical Entomology. Publicado em: 2010-08
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20. POPULATION SURVEY OF ENTOMOFAUA IN Eucalyptus spp. STANDS / LEVANTAMENTO POPULACIONAL DA ENTOMOFAUNA EM PLANTIOS DE Eucalyptus spp.
The cultivation of eucalipto has become an important economic activity in Brazil, due to its rapid growth, productive capacity, adaptability to different environments and great diversity of species, thus meeting the various sectors of industrial logging. However, with increasing areas of plantation Eucalyptus sp. entomological problems tend to increase in th
Publicado em: 2010
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21. Effects of genetically modified cotton (Bollgard®) on non-target organisms / Efeitos do algodoeiro geneticamente modificado (Bollgard®) em organismos não-alvo
The effects of the genetically modified cotton (Bollgard®) expressing Bacillus thuringiensis (Bt) Cry1Ac toxin on non-target arthropods was evaluated under laboratory and field studies. Evaluations of arthropod abundance on Bollgard® cotton (Delta Pine 90) and on its isoline (Acala 90) were carried out during three consecutive field seasons. The first stud
Publicado em: 2010
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22. NEMATÓIDES ENTOMOPATOGÊNICOS COMO CONTROLADORES BIOLÓGICOS DE CIGARRINHAS DO GÊNERO Mahanarva (HEMIPTERA: CERCOPIDAE)
The spittlebugs belonging to the genus Mahanarva cause damage to the Poaceae family cultures, like signal grass, elephant grass and sugar cane, by the sap feeding on roots (immature phase) and leaves (adult phase). With the increase demand to reduce use of chemical insecticides for the insect pests control, comes the need to develop new control methods. In t
Publicado em: 2010
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23. O papel das lideranças comunitárias em projetos de saúde e ambiente : uma análise das redes sociais em comunidades do Rio Tapajós, Pará
Deforestation practices in Amazon region lead to the development of two health problems related to inappropriate land use. One of them is mercurial contamination, which occurs through the erosion and lixiviation of the soil, when the mercury naturally found on the ground of the region contaminates the aquatic eco-system, accumulating in the trophic chains re
Publicado em: 2009
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24. Análise faunística e flutuação populacional de cigarrinhas (Hemiptera: Cicadellidae) potenciais vetoras de Xylella fastidiosa em pomares de ameixeira nos estados do Rio Grande do Sul e São Paulo, Brasil / Faunistic analysis and seasonal fluctuation of sharpshooters (Hemiptera:Cicadellidae) that are potential vectors of Xylella fastidiosa in plum orchards in Rio Grande do Sul and São Paulo states, Brazil
The plum leaf scald (PLF) is a major threat for plum production in Brazil. PLF is caused by the bacteria Xylella fastidiosa which is transmitted by sharpshooter leafhoppers (Hemiptera: Cicadellidae, Cicadellinae). In this investigation, we surveyed the Cicadellinae species associated with plum orchards located in Rio Grande do Sul (RS) and São Paulo (SP) st
Publicado em: 2009